package com.tianji.learning.mq;


import com.tianji.api.dto.trade.OrderBasicDTO;
import com.tianji.common.constants.MqConstants;
import com.tianji.common.utils.CollUtils;
import com.tianji.learning.service.ILearningLessonService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.core.ExchangeTypes;
import org.springframework.amqp.rabbit.annotation.Exchange;
import org.springframework.amqp.rabbit.annotation.Queue;
import org.springframework.amqp.rabbit.annotation.QueueBinding;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Component;

@Component
@Slf4j
@RequiredArgsConstructor
public class LessonChangeListener {
    private final ILearningLessonService learningLessonService;


    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "learning.lesson.pay.queue", durable = "true"),
            exchange = @Exchange(name = MqConstants.Exchange.ORDER_EXCHANGE, type = ExchangeTypes.TOPIC),
            key = MqConstants.Key.ORDER_PAY_KEY
    ))
    public void listenLessonPay(OrderBasicDTO orderBasicDTO){
        //1.做健壮性判断
        if(orderBasicDTO.getCourseIds()==null || CollUtils.isEmpty(orderBasicDTO.getCourseIds())){
            //不能抛出异常，若果抛出异常就出发mq重试机制
            log.error("接收到MQ消息有误，订单数据为空");
            return;
        }
        //2.调用learningService的接口，完成课程的报名
        log.debug("监听到用户{}的订单{}，需要添加课程{}到课表中", orderBasicDTO.getUserId(), orderBasicDTO.getOrderId(), orderBasicDTO.getCourseIds());
        learningLessonService.addUserLessons(orderBasicDTO.getUserId(), orderBasicDTO.getCourseIds());
    }
    @RabbitListener(bindings = @QueueBinding(
            value = @Queue(value = "learning.lesson.delete.queue",durable = "true"),
            exchange = @Exchange(value = MqConstants.Exchange.ORDER_EXCHANGE, type = ExchangeTypes.TOPIC),
            key =MqConstants.Key.ORDER_REFUND_KEY
    ))//删除我的课程表
    public void listenDeleteLesson(OrderBasicDTO orderBasicDTO){

        //1.做健壮性判断
        if(orderBasicDTO.getCourseIds()==null || CollUtils.isEmpty(orderBasicDTO.getCourseIds())){
            log.error("接收到MQ消息有误，订单数据为空");
            return;
        }
        log.debug("监听到用户{}的订单{}，需要删除课程{}", orderBasicDTO.getUserId(), orderBasicDTO.getOrderId(), orderBasicDTO.getCourseIds());
        learningLessonService.deleteUserLessons(orderBasicDTO.getUserId(),orderBasicDTO.getCourseIds());
    }
}
